> Am benchmarking dumb matrix multiplication in trying to perceive > performance drop in case when matrix cannot fit in L2 cache. However, > on my machine L2 cache is large - 2MB, so 512x512 matrix of double > numbers is needed to fill the cache, and in that case multiplication > is taking rather long time. So I'm wondering is there a way to > control (decrease) L2 cache size used by Linux? Apologies if question > inappropriate for the list.
Not easily, but on the other hand if your process is taking a long time you ought to get better and more reproducable results. Cache management is mostly done by the processor not by the OS so you have little control over pinning bits of it. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
